The value of the PRINT_SPOOL_PREFIX in include/printing.h is incompatable with
the OpenVMS ODS-2 filesystem.
If the code could be changed to only define PRINT_SPOOL_PREFIX if it is not
already defined, it would allow OpenVMS to put a value in CONFIG.H that is
appropriate for it's platform.
Example:
#ifndef PRINT_SPOOL_PREFIX
#define PRINT_SPOOL_PREFIX "smbprn."
#endif